I am having a hard time navigating the forum pages.

I recently bought a 2004 Maxima to do an engine swap into my 2003.
Does anyone know what other parts are interchangeable? The body styles are different, but I imagine lots of other things are the same.

 

Not much is a direct swap. The 04 was a complete redesign.

The engine and 4 speed auto (or 6 speed manual) are basically the same.

The front brakes are a popular swap.

 

they added an egr valve to the intake on the 2004.